... is followed by a peak load F pk . Subsequently, the clamped beams soften and then re-harden due to longitudinal stretching of the beam. The core topology has a similar influence upon the initial peak load of clamped beams to that of the simply supported beams: sandwich structures with a corrugated core...

... laminates sandwich structures sandwich beam honeycomb core composite damage mechanics Sandwich structures comprising face sheets made from a strong and stiff material separated by a low density core are extensively used in lightweight structures because of their high specific stiffness...

... for localization and damaging depending on core architecture are proposed. Finite element simulations were performed using the code ZEBULON ( 6 ). The frame is half of a two dimensions sandwich structure with conditions of symmetry. Rollers are meshed too and they were given the behavior of a standard...

... detonation waves finite element analysis sandwich structures shock wave effects stainless steel structural panels Metallic sandwich panels have emerged as blast resistant structures that can be tailored to contain damage from impulsive loads ( 1 2 3 4 5 ): applications include ship hulls...

... on the basis of the Engesser hypothesis. 22 12 2008 23 02 2009 04 02 2010 04 02 2010 beams (structures) bending buckling sandwich structures shear deformation structural engineering stability Engesser theory Haringx theory shear-weak member shear deformation...

... of the two constituent phases of the sandwich structure, we have five variables: y 1 = U i , y 2 = U i ′ , y 3 = W i , y 4 = W i ′ , and y 5 = P . The five differential equations are y 1 ′ = y 2 , the first equilibrium...

... of imperfections knocks down this strength by a factor of about 2 for most practical sandwich structures ( 3 ). The PMI foam was modeled as an isotropic elastic-ideally plastic solid, using the properties values presented in Sec. 3 . The post-yield behavior was modeled with the crushable foam formulation...

... between regimes. crack-edge stress field analysis elasticity finite element analysis fracture toughness honeycomb structures sandwich structures structural panels tensile strength Weibull distribution Numerical and analytical predictions for the fracture toughness of several honeycomb...

... layer can significantly reduce the load transfer to the back layer of a sandwich structure when subjected to shock or impulse loads. The objective of this work is to investigate the role of fluid-structure interaction (FSI) and shock-bubble interaction in the transient response of composite structures...

... the design condition reduces the efficiency of the vehicle. It would be advantageous to be able to adapt the vehicle geometry to maintain efficient flight over a range of aerodynamic conditions. Morphing sandwich structures offer sufficient strength and stiffness to serve as aerodynamic surfaces, while...

... elastic constants elasticity plates (structures) sandwich structures Elasticity solutions are significant because they provide a benchmark for assessing the performance of the various plate or shell theories or the various numerical methods such as the finite element method. For monolithic...

... of sandwich structures subject to blast loading. The behavior of the sandwich shell in the stage from the transient response to the steady dynamic response is demonstrated in Fig. 5 . It can be seen that after time t ⩾ 12 ms , the sandwich structure enters into a steady state dynamic response...

... on the occasion of his 70th birthday A major question in extrapolating small-scale laboratory tests to full-scale sandwich structures is the size effect. Delamination of the skin (or facesheet) is often triggered by wrinkling instability, which has generally been considered to be free of size effect ( 1 2...

... , “ Homogenization of Sandwich Structures ,” Int. J. Numer. Methods Eng. 0029-5981 10.1002/nme.1100 , 61 , pp. 1009 – 1027 . Xue , Z. , and Hutchinson , J. W. , 2006 , “ Crush Dynamics of Square Honeycomb Sandwich Cores ,” Int. J. Numer. Methods Eng. 0029-5981 10.1002/nme.1535 , 65 , pp...

... map that takes as axes the ratios of the time scales. metals beams (structures) sandwich structures foams finite element analysis compressive strength cavitation bending elasticity shipbuilding industry 2 3 The underwater blast resistance of sandwich beams remains an active...

... of many such comparative simulations. 09 06 2005 02 12 2005 structural panels sandwich structures honeycomb structures metals plastic deformation bending shearing indentation cavitation The response of metallic sandwich panels to the impulse caused by underwater blast...

... wall thickness. Furthermore, theoretical analysis indicates that by increasing the core thickness, sandwich structures could be up to 50% lighter while providing the same mean crushing force. However, these gains may not be achieved in practical applications since increasing the core thickness also...

...N. A. Fleck; V. S. Deshpande metal foams plastics beams (structures) sandwich structures shock wave effects bending stress effects stress-strain relations viscosity yield strength The authors, Fleck and Deshpande (FD), are grateful for the interest shown in their work ( 1...

...P. J. Tan; S. R. Reid; J. J. Harrigan sandwich structures beams (structures) shock wave effects clamps detonation waves compressive strength impact (mechanical) Fleck and Deshpande (FD) proposed an analytical model to encapsulate the response of clamped sandwich beams to blast...

.... , Fleck , N. A. , and Evans , A. G. , 2003 , “ Fabrication and Structural Performance of Periodic Cellular Metal Sandwich Structures ,” Compos. Sci. Technol. 0266-3538 10.1016/S0266-3538(03)00266-5 , 63 , p. 2331 . We are grateful to the Office of Naval Research for support...